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Follow the safety information
Safety instructions
for handling an
isolation flange
OI/LS4000/NH3/H2O-EN
The isolation flange is tested for use as an accessory together
with certified pressure equipment. It meets the requirements of
the European Directive 2014/68/EC (Pressure Equipment Di-
rective).
Note the test report included with the isolation flange!
The isolation flange must not be exposed to any kind of shock!
The isolation flange must not be dropped! The window must not
be damaged!
The flange surface on the process side must not be damaged!
Scratches, in particular those in a radial direction, affect the seal
integrity of the connection to the installation flange.
The factory installed purge gas connection (Swagelok® connec-
tion) must not be loosened or replaced!
The fixing screws of the retaining ring for the window must not
be loosened!
The surface of the installation flange must be level and must not
be damaged or deformed! Otherwise, the seal integrity of the
connection with the isolation flange cannot be guaranteed!
The isolation flange must not be installed,
If it has been exposed to any kind of shock
If it has been dropped
If it has been exposed to temperatures or pressures above
the permitted range
If the window has scratches or cracks or chips
If the flange surface on the process side is damaged
If the isolation flange flat gasket is damaged
If the surface of the installation flange is damaged!
If the isolation flange is damaged, it must be sent to the manu-
facturer for repair or reprocessing.
The user is responsible for making sure that the materials of the
isolation flange and the isolation flange flat gasket are compati-
ble with the process gas.
Improper use may lead to corrosion or erosion of the material,
and thus lead to weakening of the material.
In particular, oxidation processes or high-temperature processes
with high oxygen concentrations can impair the stability and thus
the seal integrity of the isolation flange flat gasket.
The isolation flange flat gasket is made of novaphit® SSTCTA-L, a
material manufactured by Frenzelit Werke GmbH.
Operating instruction LS4000 for NH
and H
O
3
2
23
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